21897487 (number)

21897487 is an odd 8-digits composite number following 21897486 and preceding 21897488. In scientific notation, it is written as 2.1897487 × 10^7. The sum of its digits is 46. It has a total of 3 prime factors and 8 positive divisors. There are 21631680 positive integers (up to 21897487) that are relatively prime to 21897487.

Interesting facts

Basic properties

Name

Name twenty-one million eight hundred ninety-seven thousand four hundred eighty-seven

Notation

Scientific notation 2.1897487 × 10^7
Engineering notation 2.1897487 × 10^6

Prime Factorization of 21897487

Prime Factorization 149 × 523 × 281

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21897487
Product of the distinct prime numbers

The prime factorization of 21897487 is 149 × 523 × 281. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21897487)

Multiplication

n×y
n×2 43794974
n×3 65692461
n×4 87589948
n×5 109487435

Division

n÷y
n÷2 10948743.5
n÷3 7299162.3333333
n÷3 5474371.75
n÷5 4379497.4

Exponentiation

ny
n2 479499936915169
n3 1.0499843635101E+22
n4 2.2992018950165E+29
n5 5.0346743606499E+36

Nth Root

y√n
2√n 4679.4750773992
3√n 279.76803492318
4√n 68.406688835224
5√n 29.381830934125

Divisors of 21897487

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21897486
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21897487 can be divided by 8 positive divisors. The sum of these divisors (counting 21897487) is 1, the average is 0.125.

Base conversion 21897487

Base System Value
2 Binary 1010011100010000100001111
3 Ternary 1112012111201001
4 Quaternary 1103202010033
5 Quinary 21101204422
6 Senary 2101201131
8 Octal 123420417
10 Decimal 21897487
12 Duodecimal 74001a7
16 Hexadecimal 14e210f
20 Vigesimal 6gh3e7
36 Base36 d1c7j

Cryptographic Hash Functions

md5 7a3b50285f847b7d9d81b3bb90afd30f
sha1 d8a560aab54649314c8213a654a1786a8bce0d76
sha256 c95cd685fbcfb088f6e998b3adeda80fba1f33398b6ff0a8097ead40514e89a0
sha512 72b570ff857f80b40fbfda6874de2ef5aa427868264c0adf1fa8f2b84d6bf76bb6a78ddbf2a59c5aee4df2f7cf17b5f2633bc9260874470b828399dba3de43ca
ripemd-160 53f9a154b05c5672ae398651b543be2d1c80224c

21897487 as geometric shapes

Circle

Radius = n
Diameter 43794974
Circumference 137585968.58256
Area 1.5063934792095E+15

Sphere

Radius = n
Volume 4.3981642170499E+22
Surface area 6.0255739168379E+15
Circumference 137585968.58256

Square

Length = n
Perimeter 87589948
Area 479499936915169
Diagonal 30967723.097289

Cube

Length = n
Surface area 2876999621491014
Volume 1.0499843635101E+22
Space diagonal 37927560.042079

Equilateral Triangle

Length = n
Perimeter 65692461
Area 2.0762956324079E+14
Altitude 18963780.021039

Triangular Pyramid

Length = n
Surface area 2.0762956324079E+14
Volume 1.2374184392964E+21
Height 10322574.365763